Abstract: Newest data of China's alumina industry development are used in analyzing the importance and objective of desilication in bauxite beneficiation. Based on the knowledge gained in long time theoretical research and practice of bauxite beneficiation, the authors elaborate the relationship between bauxite ore properties and its beneficiation, describe the process of “bauxite selective grinding-agglomeration flotation for silica removal” developed by the authors and its industrial application in Zhongzhou Aluminium Co., and discuss the existing problems in and future work orientation of desilication in bauxite beneficiation.

Key words: Bauxite, Beneficiation, Desilication